St. Louis quarterback Sam Bradford reinjured the left knee he had surgery on last season in the Rams' 33-14 win over the Browns in Cleveland on Saturday night.

Bradford went down after being hit by Browns defensive lineman Armonty Bryant in the first quarter. He grimaced in pain before walking gingerly to the sideline with Rams head coach Jeff Fisher watching every delicate step. Bradford was examined on the bench and then escorted to the locker room for further tests. He did not return.

Welker concussion scare: Broncos receiver Wes Welker was being evaluated for a possible concussion after taking a hit to the head from Texans defensive back D.J. Swearinger in Denver's 18-17 loss to visiting Houston.

Welker was leveled by Swearinger soon after catching a pass over the middle in the second quarter. Swearinger drew an unnecessary-roughness penalty for the hit on Welker, who has a history of concussions and wears a bigger helmet to further protect his head.

Broncos quarterback Peyton Manning (12-of-27 for 243 yards, two touchdowns, one interception) gave Swearinger an earful after throwing a 29-yard TD pass to Emmanuel Sanders. Manning ran down the field and muttered something to Swearinger, which earned the QB a taunting penalty.

Houston won when backup quarterback Tom Savage connected with tight end Ryan Griffin on a 31-yard TD with 59 seconds left. Savage then hooked up with Travis Labhart on the two-point conversion.

Brees, Wayne back: Drew Brees threw two touchdown passes in the first quarter and led New Orleans to a 23-17 win at Indianapolis. After missing more than two weeks of practice and the Saints' first two preseason games with a strained left side muscle, Brees went 9-of-15 for 128 yards with no interceptions.

Six-time Pro Bowl receiver Reggie Wayne suited up for the Colts for the first time since tearing his right ACL in October, but Indy's offense struggled. Andrew Luck played into the third quarter and finished 10-of-18 for 103 yards with one TD and one interception. Wayne caught two passes, both wiped out by penalties.

Other exhibitions: Joe Flacco's final throw was a touchdown pass as the host Ravens won 23-17 over Washington. Quarterback Robert Griffin III was 5-for-8 for 20 yards with an interception for Washington. Flacco went 16-for-23 for 180 yards, including a 24-yard touchdown throw to Steve Smith with 25 seconds left in the first half. ... Orleans Darkwa ran in from 1 yard with 1:45 left, and host Miami rallied from two scores down in the final minutes to beat Dallas 25-20. Tony Romo played the first half and completed 10 of 18 passes for 87 yards for the Cowboys. ... Minnesota's Matt Cassel threw for 152 yards, including a 53-yard touchdown, in his return to Kansas City, and the Vikings rolled to a 30-12 victory over the Chiefs. ... Rookie Bishop Sankey's 3-yard touchdown run and two-point conversion with 5:45 remaining gave Tennessee its first lead as the Titans rallied for a 24-17 win at Atlanta. ... Josh McCown directed two first-half touchdown drives, and defensive tackle Clinton McDonald returned a fumble for a score in Tampa Bay's 27-14 win at Buffalo.